Tag Archives: SSS-MFMR

NANOSENSORS AFM probes for Magnetic Force Microscopy

Did you know that NANOSENSORS offers six different types of AFM probes for Magnetic Force Microscopy ( MFM) for scanning and investigating sample surfaces with magnetic features?

PPP-MFMR – AFM tip with hard magnetic coating, sensitivity, resolution and coercivity designed for standard magnetic force microscopy applications

PPP-LM-MFMR – designed for magnetic force microscopy with reduced disturbance of the magnetic sample by the MFM tip and enhanced lateral resolution

PPP-LC-MFMR –  MFM tip with soft magnetic coating designed for the measurement of magnetic domains in soft magnetic samples

PPP-QLC-MFMR –  low coercivity MFM probe designed for high operation stability and low disturbance of magnetic samples under ultrahigh vacuum ( UHV ) conditions

SSS-MFMR – SuperSharp MFM probe for high resolution magnetic force imaging, low magnetic moment for reduced disturbance of soft magnetic samples

SSS-QMFMR – SuperSharp MFM probe for high resolution magnetic force imaging with a high mechanical Q-factor for applications in ultrahigh vacuum ( UHV ) .

The screencast introducing all these different MFM probes, their properties and their applications held by our Head of R&D Thomas Sulzbach has just passed the 1500 views mark. Congratulations Thomas!

NANOSENSORS AFM tips for Magnetic Force Microscopy

For further details please have a look at the NANOSENSORS MFM probes brochure.

Application examples for NANOSENSORS AFM probes for Magnetic Force Microscopy can be found in the NANOSENSORS blog.

NANOSENSORS screencasts on Magnetic Force Microscopy AFM probes are also available in

Chinese

on youku http://v.youku.com/v_show/id_XNzMyMDg2MjQ4.html

and Youtube

and

Japanese

On the magnetic nanostructure of a Co–Cu alloy processed by high-pressure torsion

Lately the production of nanocrystalline magnetic materials starting with coarse grained materials (top-down approach) has received increasing interest.*

The advantage of the top-down approach compared to the bottom-up approach ( e.g. using melt spinning, stacking of sheets, annealing treatments and other processing steps) is that rare-earth elements and additional processing steps such as stacking of sheets are not necessary.*

In the article “On the magnetic nanostructure of a Co–Cu alloy processed by high-pressure torsion” Martin Stückler, Christian Teichert, Aleksandar Matković, Heinz Krenn, Lukas Weissitsch, Stefan Wurster, Reinhard Pippan, Andrea Bachmaier present a preparation route of Co–Cu alloys with soft magnetic properties by high-pressure torsion deformation. Nanocrystalline, supersaturated single-phase microstructures are obtained after deformation of Co–Cu alloys, which are prepared from an initial powder mixture with Co-contents above 70 wt.%.*

The authors used NANOSENSORS SSS-MFMR magnetic AFM probes optimized for high resolution magnetic force imaging in the quantitative analysis of the magnetic microstructure by magnetic force microscopy to understand the measured magnetic properties and correlated this to the detected changes in coercivity.

The achieved results by Martin Stückler et al. show that the rising coercivity can be explained by a magnetic hardening effect occurring in context with spinodal decomposition.*

Fig. 6 from “On the magnetic nanostructure of a Co–Cu alloy processed by high-pressure torsion” by Martin Stückler et al.:
2 μm × 2 μm AFM scans of (a) as-deformed state and (c) 300 °C annealed state. The corresponding MFM scans of the as-deformed and 300 °C annealed state are shown in (b) and (d) respectively. The axial direction of the HPT specimen points out of the plane, the shear direction is in horizontal direction. The lateral scale bar in (a) applies to all scans. The minimum height and phase signal values are shifted to zero for visualization purposes.
NANOSENSORS SSS-MFMR magnetic AFM probes optimized for high resolution magnetic force microscopy were used
Fig. 6 from “On the magnetic nanostructure of a Co–Cu alloy processed by high-pressure torsion” by Martin Stückler et al.:
2 μm × 2 μm AFM scans of (a) as-deformed state and (c) 300 °C annealed state. The corresponding MFM scans of the as-deformed and 300 °C annealed state are shown in (b) and (d) respectively. The axial direction of the HPT specimen points out of the plane, the shear direction is in horizontal direction. The lateral scale bar in (a) applies to all scans. The minimum height and phase signal values are shifted to zero for visualization purposes.

*Martin Stückler, Christian Teichert, Aleksandar Matković, Heinz Krenn, Lukas Weissitsch, Stefan Wurster, Reinhard Pippan, Andrea Bachmaier
On the magnetic nanostructure of a Co–Cu alloy processed by high-pressure torsion
Journal of Science: Advanced Materials and Devices, Volume 6, Issue 1, March 2021, Pages 33-41
DOI: https://doi.org/10.1016/j.jsamd.2020.09.013

Please follow this external link to read the full article: https://www.sciencedirect.com/science/article/pii/S2468217920300873?via%3Dihub

Open Access The article “On the magnetic nanostructure of a Co–Cu alloy processed by high-pressure torsion” by Martin Stückler, Christian Teichert, Aleksandar Matković, Heinz Krenn, Lukas Weissitsch, Stefan Wurster, Reinhard Pippan, Andrea Bachmaier is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

From Polymer to Magnetic Porous Carbon Spheres: Combined Microscopy, Spectroscopy, and Porosity Studies

In their research paper “From Polymer to Magnetic Porous Carbon Spheres: Combined Microscopy, Spectroscopy, and Porosity Studies” Federico Cesano, Sara Cravanzola, Valentina Brunella, Alessandro Damin and Domenica Scarano, after having first reported the preparation of polymer waste-derived microporous carbon microspheres (SBET ~800 m2/g) 100–300 μm in size, investigate the morphology, porous texture and the surface properties of carbon and of magnetic carbon microspheres by multiple techniques.*

The multi-technique methodology they used aims at an extensive description of the different characteristics of activated carbons with magnetic properties.

For the Atomic Force Microscopy described in this paper NANOSENSORS™ SSS-MFMR AFM probes for high resolution magnetic force imaging were used for the topography images as well as the MFM imaging.

Figure 7 from “From Polymer to Magnetic Porous Carbon Spheres: Combined Microscopy, Spectroscopy, and Porosity Studies” by F. Cesano et al:
Three images described from left to right of Fe3O4-based carbon microspheres: first image on the left (a) AFM topography, middle image (b) the related phase signal, and the image on the right (c) MFM phase shift images at H = 60 nm lift height obtained in a second scan. The phase shift range in (c) is ~ 0.6 m°.
Figure 7 from “From Polymer to Magnetic Porous Carbon Spheres: Combined Microscopy, Spectroscopy, and Porosity Studies” by F. Cesano et al:
Fe3O4-based carbon microspheres: (a) AFM topography, (b) the related phase signal, and (c) MFM phase shift images at H = 60 nm lift height obtained in a second scan. The phase shift range in (c) is ~ 0.6 m°. e description

*Federico Cesano, Sara Cravanzola, Valentina Brunella, Alessandro Damin and Domenica Scarano
From Polymer to Magnetic Porous Carbon Spheres: Combined Microscopy, Spectroscopy, and Porosity Studies
Frontiers in Materials 6:84 (2019)
DOI: https://doi.org/10.3389/fmats.2019.00084

Please follow this external link to read the full research article: https://www.frontiersin.org/articles/10.3389/fmats.2019.00084/full

Open Access: The article « From Polymer to Magnetic Porous Carbon Spheres: Combined Microscopy, Spectroscopy, and Porosity Studies” by Federico Cesano, Sara Cravanzola, Valentina Brunella, Alessandro Damin and Domenica Scarano which is cited above is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.